D. the value of information in winning games
（選項D的含義是：信息對于贏得比賽的價值。）
葉碩/著 《愛上背單詞 高考關(guān)鍵詞》天津教育出版社
Exercise：
用上述所講單詞的適當(dāng)形式填空。
1. It’s difficult to keep _________ of all the new discoveries in genetics.
2. New agreements will increase _________ between the two countries.
3. I wouldn’t mind _________ jobs with her.
4. The girls were playing _________ on their teacher.
5. I’m not trying to _________ you—just answer the question.
6. The company ran into _________ when it tried to expand too quickly.
7. He often _________ the neighbors to take care of his dog when he lived there.
8. His research has been of little practical _________.
Key:
1. track 2. trade 3. trading 4. tricks
5. trick 6. trouble 7. troubled 8. value
（選項D的含義是：信息對于贏得比賽的價值。）
葉碩/著 《愛上背單詞 高考關(guān)鍵詞》天津教育出版社
Exercise：
用上述所講單詞的適當(dāng)形式填空。
1. It’s difficult to keep _________ of all the new discoveries in genetics.
2. New agreements will increase _________ between the two countries.
3. I wouldn’t mind _________ jobs with her.
4. The girls were playing _________ on their teacher.
5. I’m not trying to _________ you—just answer the question.
6. The company ran into _________ when it tried to expand too quickly.
7. He often _________ the neighbors to take care of his dog when he lived there.
8. His research has been of little practical _________.
Key:
1. track 2. trade 3. trading 4. tricks
5. trick 6. trouble 7. troubled 8. value